Messages in this thread | | | Subject | Re: [PATCH v2] QEMU fw_cfg DMA interface documentation | From | Gerd Hoffmann <> | Date | Mon, 07 Sep 2015 13:08:29 +0200 |
| |
Hi,
> It's just simplicity. If you want to read a few times from the same > field (like in ACPI tables, read the data size and then the data), you > need a way to enable and disable the selector and manage the current > offset for that entry. This is already provided with the "old" > interface.
Could be handled with a 'select' control bit. Only when set select entry and reset offset to zero.
Also: would it make sense to allow an *array* of FWCfgDmaAccess structs? With a 'more' bit in control we could indicate that there are more entries. I'm not sure firmware would actually use that though ...
cheers, Gerd
| |